Maybe lawmakers could help by mandating that if you launch a kg you have to deorbit a kg. Given the right incentives I'm sure the private market can solve this problem.
Yep exactly. It's already happening. I have a few colleagues that are knee-deep in space law and it's interesting to see how rapidly the landscape is changing in response to the growing threat to essential space-based assets (weather satellites, GNSS (GPS, Galileo), disaster-monitoring satellites etc.).